{"instruction": "You are an expert in event extraction. Please extract event types and event trigger words from the input that conform to the schema definition. Return an empty list for non-existent events. Please respond in the format of a JSON string.", "schema": ["adverse event"], "input": "BACKGROUND: Interferon (IFN)-associated retinopathy is typically characterized by retinal hemorrhages and cotton wool spots at the posterior fundus, but visual function is usually maintained."}
{"adverse event": ["associated "]}